Hunger games Hunting mode

In this mode, everyone starts off with a iron hoe, and there are no chests. Instead there will be mobs that spawn with gear that will drop some of their gear upon death. Zombies give you stuff like leather and wood swords, wither skeletons give gold armour and weapons, pigmen(they get speed) give you chain armour and a stone weapon, and skeletons have iron, but they have a punch bow(that does not drop), creepers drop tnt when they die, and endermen drop ender pearls, and extremely rare, a piece of diamond armour/weaponry.(They do have a better chance of just dropping diamonds though)Witches drop potions, and iron golems guaranteed drop a piece of diamond armor and some iron, and spiders drop string and sticks.In this mode there is also an increase in animals, to compensate for not having the amount of chest food.

To me this sounds very similar to our regular survival games, killing mobs would be almost as easy as looting a chest (except for skeletons if you have no shield). Do you have an idea to add more actually challenging PvE elements?